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[Po-Hsu Lin <2046148@xxxxxxxxxxxxxxxxxx>]

memfd_create03 can be found failing with the same error message (this
test requires 4.14+), I will update the bug title and description.

** Summary changed:

- pkey01 and futex_wake04 from ubuntu_ltp_syscalls failed with X-kvm (Fail to open /proc/sys/vm/compact_memory for writing)
+ pkey01, futex_wake04 and memfd_create03 from ubuntu_ltp_syscalls failed with X-kvm (Fail to open /proc/sys/vm/compact_memory for writing)

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https://bugs.launchpad.net/bugs/2046148

Title:
  pkey01, futex_wake04 and memfd_create03 from ubuntu_ltp_syscalls
  failed with X-kvm (Fail to open /proc/sys/vm/compact_memory for
  writing)

Status in ubuntu-kernel-tests:
  New

Bug description:
  This issue pops up after updating to the latest tip of LTP test suite
  (commit 776b57984 "rwtest: Remove df symlink check")

  These 2 failures are limited to X-kvm kernel and they're all failing with the same error message, I didn't see this failure on other 4.4 variants (X, X-aws, T-lts-X).
  Bisect shows this issue is caused by acf46111b5 "hugetlb: compacting memory to reduce fragmental pages" [1]

  Test log for pkey01:
  <<<test_start>>>
  tag=pkey01 stime=1702291503
  cmdline="pkey01"
  contacts=""
  analysis=exit
  <<<test_output>>>
  incrementing stop
  tst_hugepage.c:50: TBROK: Failed to open FILE '/proc/sys/vm/compact_memory' for writing: ENOENT (2)
  <<<execution_status>>>
  initiation_status="ok"
  duration=0 termination_type=exited termination_id=2 corefile=no
  cutime=0 cstime=24
  <<<test_end>>>

  Test log for futex_wake04:
  <<<test_start>>>
  tag=futex_wake04 stime=1702291801
  cmdline="futex_wake04"
  contacts=""
  analysis=exit
  <<<test_output>>>
  incrementing stop
  tst_hugepage.c:50: TBROK: Failed to open FILE '/proc/sys/vm/compact_memory' for writing: ENOENT (2)
  <<<execution_status>>>
  initiation_status="ok"
  duration=0 termination_type=exited termination_id=2 corefile=no
  cutime=0 cstime=0
  <<<test_end>>>

  Before this change the pkey01 test will be skipped with:
  <<<test_start>>>
  tag=pkey01 stime=1702290779
  cmdline="pkey01"
  contacts=""
  analysis=exit
  <<<test_output>>>
  incrementing stop
  tst_hugepage.c:83: TINFO: 1 hugepage(s) reserved
  tst_test.c:1560: TINFO: Timeout per run is 0h 00m 30s
  pkey.h:27: TCONF: syscall(330) __NR_pkey_alloc not supported on your arch

  Summary:
  passed   0
  failed   0
  broken   0
  skipped  1
  warnings 0
  <<<execution_status>>>
  initiation_status="ok"
  duration=0 termination_type=exited termination_id=32 corefile=no
  cutime=0 cstime=0
  <<<test_end>>>

  The futex_wake04 test will pass with:
  <<<test_start>>>
  tag=futex_wake04 stime=1702292456
  cmdline="futex_wake04"
  contacts=""
  analysis=exit
  <<<test_output>>>
  incrementing stop
  tst_hugepage.c:83: TINFO: 1 hugepage(s) reserved
  tst_test.c:1560: TINFO: Timeout per run is 0h 00m 30s
  futex_wake04.c:52: TINFO: Testing variant: syscall with old kernel spec
  futex_wake04.c:90: TINFO: Hugepagesize 2097152
  futex_utils.h:59: TINFO: Thread 17485 not sleeping yet
  futex_wake04.c:75: TPASS: Hi hydra, thread2 awake!

  Summary:
  passed   1
  failed   0
  broken   0
  skipped  0
  warnings 0
  <<<execution_status>>>

  [1] https://github.com/linux-test-
  project/ltp/commit/acf46111b5cc0f4bfb2309a797f5b1a937e47ff8

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